When Dusty learns that his engine is damaged and he may never race again, he joins a forest fire and rescue unit to be trained as a firefighter, or else his air strip will be shut down.When Dusty learns that his engine is damaged and he may never race again, he joins a forest fire and rescue unit to be trained as a firefighter, or else his air strip will be shut down.When Dusty learns that his engine is damaged and he may never race again, he joins a forest fire and rescue unit to be trained as a firefighter, or else his air strip will be shut down.